• Peel and wash the potatoes. Cut them off a little at the edges so we get straight and even ends on our fries. On a chopping board, cut them lengthwise into 1 cm (1/2 an inch) wide slices.
• Stack the slices on top of one another and cut them lengthwise again into 1 cm (1/2 an inch) thick sticks. Pat them dry using kitchen paper to absorb the excess moisture.
• In a deep-fryer or a large saucepan pour the oil and heat it up to around 150 °C/ 300 °F.
• Carefully add the fries to the oil, making sure they are fully submerged and cook them for about 5 minutes.
• Now transfer the fries to a dish lined with kitchen paper to absorb the oil and leave the to cool for around 30 minutes.
• When ready to serve, add the potatoes back into the pan and fry for another 4-5 minutes at 190ºC/ 375 °F until crispy and golden. Transfer onto a paper towel lined dish and sprinkle with salt.
• Serve with a generous helping of mayonnaise on the side.

For the mayonnaise:

• Making the mayonnaise is easy! First, crack an egg or two and separate the yolks from the whites.
• Add the yolks into the food processor's bowl and beat it for 20 seconds on high speed until beaten. Now, add the vinegar, mustard and a good pinch of salt and continue beating on high.
• When the mixture starts to look homogenous, begin adding the oil, a few drops at a time in the beginning, until the mixture starts to emulsify and become creamy in consistency.
• Then you can add the oil in a steady small stream. (It's important not too add to much of it at a time as the mayonnaise can curdle!)
• Once you've added all the oil, you'll have a creamy golden and thick mayonnaise. If you'd like to thin in down a little, you can adjust the consistency by adding 1-2 tablespoons of water while the food processor is still running on high speed.
• If you like a garlicky kick to your fries, you can add roast garlic to the mayo for more flavor! Simply chop off a quarter off the top of a garlic bulb, place it on a baking tray and drench it in olive oil. Bake it in a preheated oven at 200 °C/ 370 °F for 20 minutes, until the garlic has softened and browned. Squeeze the roasted garlic into the mixture after the second step above.
• Serve as a sauce alongside these delicious French fries and enjoy your snack!